This scarce issue from Soviet Russia (RSFSR) features a striking black overprint of the hammer and sickle within a star, applied on an Imperial Russian definitive. The new face value of 30 Rubles is boldly surcharged at the bottom. Issued during the turbulent early post-revolutionary years, such provisional overprints reflect the economic and political shifts of the time. Collectors prize these stamps both for their historical symbolism and their role in bridging Imperial and Soviet postal history. A significant piece for any advanced Russia or revolutionary-era collection.